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- W2025473345 abstract "To evaluate reliability and best sequence in the use of atlas-based autosegmentation of computed tomography images in locally advanced rectal cancer in clinical practice and in educational programs (Smart Segmentation Knowledge Based Contouring (SS-KBC) research program). Fourteen consecutive patients were selected between October and December 2011; images of 4 patients as atlas, 10 for validation. According to our ongoing QA program two operator were involved.CTV, pelvic subsites and OAR were contoured by Delineator in four different group (A-manual vs B-autosegmentation and C-autosegmentation+manual revision vs D-manual+autosegmentation+manual revision) of contouring using the same planning CT; all of them underwent to I.C. by Reviewer. Times for all the contours were recorded; evaluation was assessed using Dice coefficients. In clinical practice there was statistically significant time sparing between group B and group A (13 min, p = 0.002), a mean Dice coefficient in favor of group A for CTV and all subsites (p = 0.0195). In training programs there was a statistically significant time sparing between group D and group C (16 min, p = 0.002) (Table). The use of SS-KBC could be introduced in clinical practice, substituting Delineator and it could have a tutorial role in training programs. Two prospective studies are ongoing on a larger series of patients." @default.
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- W2025473345 date "2012-11-01" @default.
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- W2025473345 title "Atlas-based Auto-segmentation Clinical Validation of Pelvic Volumes and Normal Tissue in Rectal Tumors" @default.
- W2025473345 doi "https://doi.org/10.1016/j.ijrobp.2012.07.916" @default.
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